CN2553494Y

CN2553494Y - Permanent-magnet separation tripping device

Info

Publication number: CN2553494Y
Application number: CN 02263277
Authority: CN
Inventors: 严洪启
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-19
Filing date: 2002-07-19
Publication date: 2003-05-28
Anticipated expiration: 2012-07-19

Abstract

The utility model relates to a permanent-magnet separation tripping device which comprises a casing [11], a frame [3], a coil curl [2] and a movable iron core [4], wherein the frame is arranged in the casing [11], the coil curl [2] is arranged on the frame [3], and the movable iron core [4] is positioned in the coil curl [2]. A permanent magnet [1] is fixed on the frame [3] and is positioned on the outer side of one end of the movable iron core [4] which is also sheathed with a spring [5]. A shift lever [8] is pivoted with the frame [3] or the casing [11] through a rotation shaft [12] of the shift lever, one end of the shift lever [8] is sheathed on the movable iron core [4], and a microswitch [9] is connected with the coil curl [2] in series. The utility model replaces a still iron core and the work coil curl of the still iron core by the permanent magnet. The coil curl has the advantages of high resistance and low work current, and has no appreciable line drop when the tripping device works.

Description

The permanent magnetism shunt release

Technical field

The utility model relates to a kind of permanent magnetism shunt release, mainly is used as the usefulness of the automatic disjunction of far distance controlled circuit breaker.

Background technology

In the prior art, shunt release comprises housing, be arranged at framework in the housing, be arranged at coil on the described framework, be positioned at the moving iron core and the static iron core of coil, shunt release is when low-voltage DC supply, the operating current of coil is big, corresponding line drop is bigger, can not guarantee the release operate as normal.

Summary of the invention

The permanent magnetism shunt release that provides a kind of operating current little is provided the purpose of this utility model.

The technical solution of the utility model is: a kind of permanent magnetism shunt release, it comprises housing, be arranged at the framework in the housing, be arranged at the coil on the described framework, be positioned at the moving iron core of coil, be fixed with permanent magnet on the described framework, this permanent magnet is positioned at the outside of an end of moving iron core, housing is stretched out in the other end of moving iron core, also be with spring on the moving iron core, driving lever and framework or housing are pivotally connected by the driving lever rotating shaft, one end of driving lever is enclosed within on the moving iron core, stretch out outside the housing the other end of driving lever, sensitive switch and coil are in series, be under the attracting state at moving iron core, driving lever is pressed in and makes on the sensitive switch that sensitive switch is in off-state.

The utility model compared with prior art has following advantage:

The utility model replaces static iron core and static iron core actuating coil with permanent magnet, and the resistance of coil is big, and operating current is little, does not have obvious line drop during release work, needn't stipulate to install heavy in section lead when construction.Especially meet relevant security against fire electricity consumption regulation in the construction standards, the security against fire regulation, shunt release must be controlled by low-voltage DC supply, and circuit breaker needs automatic disconnection during fire, stops power supply.Because shunt release is when low-voltage DC supply, operating current is big, and the respective lines pressure drop is bigger, can not guarantee the release operate as normal, and release is because of can not normally discharging when causing fire, and circuit breaker can not normal power down.

Description of drawings

Accompanying drawing 1 is structure master's cutaway view of the present utility model;

Accompanying drawing 2 is that the utility model cooperates the schematic diagram when installing with circuit breaker; Wherein:

[1], permanent magnet; [2], coil; [3], framework; [4], moving iron core; [5], spring; [6], plate washer; [7], torsion spring; [8], driving lever; [9], sensitive switch; [10], wiring board; [11], housing; [12], driving lever rotating shaft; [13], buffer spring; [14], iron stem; [15], Elastic buckle; [16], circuit breaker;

Embodiment:

Referring to attached Fig. 1 and 2, a kind of permanent magnetism shunt release, it comprises housing [11], be arranged at the framework [3] in the housing [11], be arranged at the coil [2] on the described framework [3], be positioned at the moving iron core [4] of coil [2], be fixed with permanent magnet [1] on the described framework [3], this permanent magnet [1] is positioned at the outside of an end of moving iron core [4], housing [11] is stretched out in the other end of moving iron core [4], also be with spring [5] on the moving iron core [4], a driving lever [8] is pivotally connected by driving lever rotating shaft [12] with framework [3] or housing [11], one end of driving lever [8] is enclosed within on the moving iron core [4], stretch out outside the housing [11] the other end of driving lever [8], a sensitive switch [9] is in series with coil [2], the contact of described sensitive switch [9] is controlled by driving lever [8], be in (position as shown in Figure 1) under the attracting state at moving iron core [4], driving lever [8] is pressed in and makes on the sensitive switch [9] that sensitive switch [9] is in off-state.Be with torsion spring [7] in the described driving lever rotating shaft [12], an end of torsion spring [7] is connected with driving lever [8], and the other end of torsion spring [7] is connected with framework [3].One end of described spring [5] is connected with moving iron core [4], conflicts on baffle plate [6] in the other end of spring [5], and described baffle plate [6] is fixed on the moving iron core [4], and described baffle plate [6] contacts with driving lever [8].The sidepiece of described housing [11] is provided with the Elastic buckle [11] that is the bending of " U " shape, and referring to accompanying drawing 2, the utility model is that plug-in type is installed, and only must open the loam cake that circuit breaker covers greatly, can install or pull down.Changed and to have opened the just traditional shortcoming of detachable release of the big lid of circuit breaker in the past.

After the utility model is packed circuit breaker into, when circuit breaker is in closing position, the other end of driving lever [8] is reversed, driving lever [8] rotates counterclockwise, sensitive switch [9] is connected, one end of driving lever [8] is loosened the compression to spring [5] simultaneously, but moving iron core [4] is failure to actuate against the inside that the suction of permanent magnet [1] still is pull-in on coil [2].When the external world imports an assigned voltage, through sensitive switch [9], wiring board [10] output one galvanic current stream, this electric current produces a magnetic flux through coil [2], its direction is opposite with the direction of permanent magnet [1], offset the suction of permanent magnet [1] to moving iron core [4], the reducing power of the moving pressured spring that contracts of iron core [4] [5] ejects, and the other end of stretching out housing [11] of moving iron core [4] makes circuit breaker tripping.Circuit breaker one is threaded off and is loosened reversing driving lever [8] immediately, driving lever [8] recovers former state by the torsion of torsion spring [7], when sensitive switch [9] is oppressed, sensitive switch [9] is disconnected, coil [2] dead electricity, driving lever [8] are compressed spring [5] again makes iron core [4] be pull-in on the inside of coil [2].

Claims

1, a kind of permanent magnetism shunt release, it comprises housing [11], be arranged at the framework [3] in the housing [11], be arranged at the coil [2] on the described framework [3], be positioned at the moving iron core [4] of coil [2], it is characterized in that: be fixed with permanent magnet [1] on the described framework [3], this permanent magnet [1] is positioned at the outside of an end of moving iron core [4], housing [11] is stretched out in the other end of moving iron core [4], also be with spring [5] on the moving iron core [4], a driving lever [8] is pivotally connected by driving lever rotating shaft [12] with framework [3] or housing [11], one end of driving lever [8] is enclosed within on the moving iron core [4], stretch out outside the housing [11] the other end of driving lever [8], a sensitive switch [9] is in series with coil [2], be under the attracting state at moving iron core [4], driving lever [8] is pressed in and makes on the sensitive switch [9] that sensitive switch [9] is in off-state.

2, permanent magnetism shunt release according to claim 1 is characterized in that: the sidepiece of described housing [11] is provided with the Elastic buckle [11] that is the bending of " U " shape.

3, permanent magnetism shunt release according to claim 1 is characterized in that: be with torsion spring [7] in the described driving lever rotating shaft [12], an end of torsion spring [7] is connected with driving lever [8], and the other end of torsion spring [7] is connected with framework [3].

4, permanent magnetism shunt release according to claim 1, it is characterized in that: an end of described spring [5] is connected with moving iron core [4], conflict on baffle plate [6] in the other end of spring [5], and described baffle plate [6] is fixed on the moving iron core [4], and described baffle plate [6] contacts with driving lever [8].